div{text-align: center; margin-top: 200px;}
h1 {
    font-size: 150px;
    font-weight: 700;
    text-shadow: 4px 4px 0 #f5f6fa, 6px 6px 0 #a4a4a4;
    line-height: 30px;
    color: #257AB3;
}
h4 {
    font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
    color: #313944;
    line-height: 1.5;
    letter-spacing: .5px;
    font-size: 18px;
    margin: 30px 0px;
    font-weight: normal;
}
a{text-decoration: none}
span{vertical-align: bottom}
.btn {
    color: #fff;
    padding: 8px 12px;
    letter-spacing: 1px;
    border-color: #33cabb;
    border-radius: 2px;
    background-color: #257AB3;
    outline: none;
}
